S

Apriel v1.5 15B Thinker

Sep 2025
SApriel v1.5 15B Thinker
Compare in
on
—per task?
self-host onlyprice
—output speed?
128Kcontext

Ranking?

Strong at

B
Tool calling#94 of 242Reasoning#159 of 334Instructions#81 of 245
C
Science#178 of 312Long context#234 of 273Knowledge#236 of 318Vision#100 of 124

Run it yourself

estimate
Fits on✓ 8 GB (phone, laptop) · compressed✓ 16 GB · 8-bit✓ 24 GB GPU · 8-bit✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality
LicenceMITfree for commercial use

History

2 versions
13.413.513.613.713.813.9Oct 25Release dateAA Intelligence Index 4.3.2v1.5v1.6
13.413.513.613.713.813.9Oct 25Release dateAA Intelligence Index 4.3.2v1.5v1.6

Benchmarks

all categories
Chat & Knowledge
Humanity's Last Exam12.1#160
AA Omniscience Index-54.8#237
CritPt (physics)1.1#120
AA Intelligence Index 4.3.2≈13.8#156
AA Omniscience · Accuracy16.5#209
AA Omniscience · Hallucination Rate85.3#202
AA-LCR (long context) 1.121.3#236
GPQA Diamond71.3#180
AIME 2025 · AA archived87.5#27
Coding
Terminal-Bench Hard (version unstated)10.6#122
LiveCodeBench · AA archived72.8#37
Agents & Tool Use
τ²-bench · AA68.4#96
Writing & Language
IFBench (instructions)61.7#81
Vision & Documents
MMMU-Pro (vision)57.1#102

FAQ

How much does Apriel v1.5 15B Thinker cost?›

There is no per-unit API price: self-host only.

Is Apriel v1.5 15B Thinker free to use?›

There is no free API. The weights are open, so you can run it yourself.

How good is Apriel v1.5 15B Thinker, and what is it best at?›

#159 of 334 in Chat & Knowledge, #121 of 239 in Coding, #94 of 242 in Agents & Tool Use, #81 of 245 in Writing & Language, #100 of 124 in Vision & Documents.

Is Apriel v1.5 15B Thinker better than Nova 2.0 Pro Preview?›

On AA Intelligence Index 4.3.2, Apriel v1.5 15B Thinker scores 13.8 vs 14.2 — about the same.

What is the context window of Apriel v1.5 15B Thinker?›

128K tokens.

When was Apriel v1.5 15B Thinker released? Is there a newer version?›

Released 2025-09-30. It has been superseded by Apriel v1.6 15B Thinker.

Is Apriel v1.5 15B Thinker open source?›

Yes, the weights are open (MIT licence).

Can I run Apriel v1.5 15B Thinker locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

Can Apriel v1.5 15B Thinker read images?›

It accepts text and images as input.

What is Apriel v1.5 15B Thinker?›

Apriel v1.5 15B Thinker is an open-weights language model from ServiceNow, released Sep 2025.

What are the best alternatives to Apriel v1.5 15B Thinker?›

GPT-6 Luna (better), Qwen3.8 27B (open weights).